Topological track reconstruction in unsegmented, large-volume liquid scintillator detectors

Wonsak, B.; Hagner, C.; Hellgartner, D.; Loo, Kai; Lorenz, Sebastian; Meyhöfer, David; Oberauer, L.; Rebber, Henning; Trzaska, W. H.; Wurm, M.

doi:10.1088/1748-0221/13/07/p07005

Cited by 23 publications

(20 citation statements)

References 39 publications

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“…Recently, another reconstruction method has been proposed in Ref. [55], where it has been shown that it is possible to more precisely determine the annihilation vertex of the prompt signal. Hence, in the extreme case, x i n can be taken as the mean energy-weighted deposition position and x i e + as the annihilation position of the prompt positron.…”

Section: B Sensitivitymentioning

confidence: 99%

Towards a complete reconstruction of supernova neutrino spectra in future large liquid-scintillator detectors

Li¹,

Li²,

Wang³

et al. 2018

Phys. Rev. D

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In this paper, we show how to carry out a relatively more realistic and complete reconstruction of supernova neutrino spectra in the future large liquid-scintillator detectors, by implementing the method of singular value decomposition with a proper regularization. For a core-collapse supernova at a distance of 10 kpc in the Milky Way, itsν e spectrum can be precisely determined from the inverse beta-decay processν e þ p → e þ þ n, for which a 20 kiloton liquid-scintillator detector with the resolution similar to the Jiangmen Underground Neutrino Observatory may register more than 5000 events. We have to rely predominantly on the elastic neutrino-electron scattering ν þ e − → ν þ e − and the elastic neutrino-proton scattering ν þ p → ν þ p for the spectra of ν e and ν x , where ν denotes collectively neutrinos and antineutrinos of all three flavors and ν x for ν μ and ν τ as well as their antiparticles. To demonstrate the validity of our approach, we also attempt to reconstruct the neutrino spectra by using the time-integrated neutrino data from the latest numerical simulations of delayed neutrino-driven supernova explosions.

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Section: B Sensitivitymentioning

confidence: 99%

Towards a complete reconstruction of supernova neutrino spectra in future large liquid-scintillator detectors

Li¹,

Li²,

Wang³

et al. 2018

Phys. Rev. D

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“…These efforts include a precision measurement of attenuation at long distances, demonstration of material compatibility with detector components, and accurate costs and production capabilities. Examples include WbLS development at BNL [29], compatibility studies at UC Davis, characterization and optimization with the CHESS detector at UC Berkeley and LBNL [23,30], fast photon sensor development at Chicago and Iowa State [31], spectral photon sorting at Penn [26], development of reconstruction and particle identification algorithms [32][33][34][35][36][37][38][39][40], and potential nanoparticle loading in NuDot at MIT [41]. A practical purification system is being developed at UC Davis [42].…”

Section: Water-based Liquid Scintillatormentioning

confidence: 99%

“…This technique can naturally accommodate Cherenkov and scintillation light, as was required for MiniBooNE, by combining Cherenkov and scintillation light predictions for each photosensor in the calculation of the likelihood. In contrast to this, three-dimensional topological reconstruction [32] tries to picture the spatial distribution of the energy deposition within the detector without using a specific hypothesis. This technique has been developed for the LENA [59] detector and also been implemented for the JUNO detector [60].…”

Section: Reconstruction Techniquesmentioning

confidence: 99%

“…and rescaled such that the maximum content is 1. The plots are taken from [32], which provides details on the reconstruction procedure Fig. 3 Maximum derivative of the radial profile of the 3D-topological reconstruction at 2 MeV in JUNO for (left) electrons and positrons and (right) electrons and gammas [61] conventional high-light yield liquid scintillator has also been demonstrated in simulations relevant to NLDBD experiments [37].…”

Section: Reconstruction Techniquesmentioning

confidence: 99%

See 1 more Smart Citation

Theia: an advanced optical neutrino detector

et al. 2020

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New developments in liquid scintillators, highefficiency, fast photon detectors, and chromatic photon sorting have opened up the possibility for building a large-scale detector that can discriminate between Cherenkov and scintillation signals. Such a detector could reconstruct particle direction and species using Cherenkov light while also having the excellent energy resolution and low threshold of a scintillator detector. Situated deep underground, and utilizing new techniques in computing and reconstruction, this detector could achieve unprecedented levels of background rejection, enabling a rich physics program spanning topics in nuclear, high-energy, and astrophysics, and across a dynamic range from hundreds of keV to many GeV. The scientific program would include observations of low-and high-energy solar neutrinos, determination of neutrino mass ordering and measurement of the neutrino CP-violating phase δ, observations of diffuse supernova neutrinos and neutrinos from a supernova burst, sensitive searches for nucleon decay and, ultimately, a search for neutrinoless double beta decay, with sensitivity reaching the normal ordering regime of neutrino mass phase space. This paper describes Theia, a detector design that incorporates these new technologies in a practical and affordable way to accomplish the science goals described above.

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“…Muitos experimentos usam cintiladores líquidos para estudo de partículas de alta energia, como múons (WONSAK et al, 2018) (GIAZ, 2018. Baseado nestes experimentos, podemos aplicar conceitos semelhantes em nosso experimento, dada a simetria das PMTs do cintilador líquido do COSINE-100.…”

Section: Para Reconstrução De Trajetóriaunclassified

Busca da matéria escura por meio de detecção direta: reconstrução e estudo de eventos gerados por múons no experimento COSINE-100

Manzato¹

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The nature of dark matter is one of the main subjects of study today. Although we can infer its presence in the universe, for example, through observation of its gravitational effects, its composition is still in debate. To resolve this issue, many experiments have been and are being carried out. To date, none of them has shown sufficient evidence for a definitive conclusion. However, one of them, the DAMA/LIBRA experiment, claims to have achieved conclusive results on the nature of dark matter by observing an annual modulation in the events obtained in its NaI(Tl) crystal scintillators, although such results are not confirmed by other experiments. To obtain a verdict on the result of the DAMA/LIBRA experiment, the COSINE-100 experiment was idealized, which uses the same type of detectors to confirm or refute the observations of the DAMA/ LIBRA. The COSINE-100 experiment has been in operation since 2016 at the Yangyang laboratory (Y2L), South Korea. To ensure good data analysis, there is a great deal of effort in the study of background radiation present in the experiment, in addition to its prevention with various active and passive shielding layers. One of the most important radiations studied are muons, which can be candidates for explaining the results of the DAMA/LIBRA experiment, as they also present an annual modulation and can cause events with energy similar to that expected for dark matter in crystal detectors. In order to deepen the study of this type of radiation and improve the selection of events in the experiment, in this work methods for reconstructing the trajectory of muons, as well as the direction of their flow through the experimental setup are studied.

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Topological track reconstruction in unsegmented, large-volume liquid scintillator detectors

Cited by 23 publications

References 39 publications

Towards a complete reconstruction of supernova neutrino spectra in future large liquid-scintillator detectors

Towards a complete reconstruction of supernova neutrino spectra in future large liquid-scintillator detectors

Theia: an advanced optical neutrino detector

Busca da matéria escura por meio de detecção direta: reconstrução e estudo de eventos gerados por múons no experimento COSINE-100

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